Method for preparing modified starch by utilizing ozonation

A modified starch and ozone oxidation technology, applied in the field of starch deep processing, can solve problems such as limiting the value of oxidized starch, and achieve obvious economic and social benefits, clean production process, and simple operation.

Inactive Publication Date: 2019-08-30
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common method of oxidizing starch with chemical reagents such as acid-base oxidizing agents, due to various factors such as safety, this type of oxidized starch is mostly used in industry, which limits the value of oxidized starch in the fields of food and medicine

Method used

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  • Method for preparing modified starch by utilizing ozonation
  • Method for preparing modified starch by utilizing ozonation
  • Method for preparing modified starch by utilizing ozonation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Soaking: Weigh corn starch, put it in a container, add water to soak, wherein the mass ratio of starch to water is 1:5, and the soaking time is 2 hours;

[0029] (2) Ozone oxidation of cornstarch: connect the obtained starch milk to an ozone generator, and place it under the condition that the ozone flow rate is 1L / min for oxidation, and the oxidation time is 5-480min;

[0030] (3) Suction filtration: the starch milk prepared in step (2) is subjected to suction filtration with a Buchner funnel;

[0031] (4) drying: take out the starch prepared in step (3) and dry at 40°C for 48h;

[0032] (5) pulverizing: pulverizing the dried starch in step (4);

[0033] (6) Sieving: pass the pulverized modified starch obtained in step (5) through a 100-mesh sieve to obtain the modified starch.

Embodiment 2

[0035] 1) Soaking: Weigh cornstarch, put it in a container, add water to soak, wherein the mass ratio of starch to water is 1:10, and the soaking time is 2 hours;

[0036] (2) Ozone oxidation of cornstarch: connect the obtained starch milk to an ozone generator, and place it under the condition that the ozone flow rate is 1L / min for oxidation, and the oxidation time is 5-480min;

[0037] (3) Suction filtration: the starch milk prepared in step (2) is subjected to suction filtration with a Buchner funnel;

[0038] (4) drying: take out the starch prepared in step (3) and dry at 40°C for 48h;

[0039] (5) pulverizing: pulverizing the dried starch in step (4);

[0040] (6) Sieving: pass the pulverized modified starch obtained in step (5) through a 100-mesh sieve to obtain the modified starch.

Embodiment 3

[0042] 1) Soaking: Weigh cornstarch, put it in a container, add water to soak, wherein the mass ratio of starch to water is 1:20, and the soaking time is 2 hours;

[0043] (2) Ozone oxidation of cornstarch: connect the obtained starch milk to an ozone generator, and place it under the condition that the ozone flow rate is 1L / min for oxidation, and the oxidation time is 5-480min;

[0044] (3) Suction filtration: the starch milk prepared in step (2) is subjected to suction filtration with a Buchner funnel;

[0045] (4) drying: take out the starch prepared in step (3) and dry at 40°C for 48h;

[0046] (5) pulverizing: pulverizing the dried starch in step (4);

[0047] (6) Sieving: pass the pulverized modified starch obtained in step (5) through a 100-mesh sieve to obtain the modified starch.

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Abstract

The invention relates to a method for preparing modified starch by utilizing ozonation, and belongs to the technical field of deep processing of starch. The preparation method comprises the steps of soaking of corn starch, ozonation, extraction filtration, drying, crushing and sieving so as to obtain oxidized modified starch, wherein the ozonation conditions are as follows: corn starch milk with different concentrations after soaking is oxidized under the condition of 1 L/min of ozone flow, and the oxidation time is 5 min-480 min. The method provided by the invention is easy to control and simple to operate; a production process is clean; no pollution is caused to the environment; used reagents and materials are of common specifications and the production cost is low; no residues exist during production; the modified starch prepared by the method has no chemical reagent residues, and can be better applied to the fields of food and medicine.

Description

technical field [0001] The invention belongs to the technical field of starch deep processing, and in particular relates to a method for preparing modified starch by ozone oxidation. Background technique [0002] Modified starch is the use of physical, chemical and enzymatic means to change the properties of native starch, so that the individual properties of modified starch meet all the needs of applications in various industries. Modified starch has a wide range of usage and usage range. Nowadays, China has produced a variety of modified starches such as pregelatinized starch, acidified starch, oxidized starch, etherified starch, esterified starch, cross-linked starch, and grafted starch. These modified starches can be applied to many industries such as textile, papermaking, food, petroleum, medical, construction, agricultural feed, daily chemical industry, etc. There are more than 70 varieties of modified starches in total. Among all modified starches, oxidized starch i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/18
CPCC08B31/18
Inventor 余世锋邢禹哲孙敬明宫春宇王存堂肖云鹏刘子祯王岩张慧君王文霞
Owner QIQIHAR UNIVERSITY
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